23123261 has 16 divisors (see below), whose sum is σ = 27535104. Its totient is φ = 19004544.

The previous prime is 23123251. The next prime is 23123273. The reversal of 23123261 is 16232132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23123261 - 2¹⁴ = 23106877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18296 + ... + 19518.

It is an arithmetic number, because the mean of its divisors is an integer number (1720944).

Almost surely, 2^23123261 is an apocalyptic number.

It is an amenable number.

23123261 is a deficient number, since it is larger than the sum of its proper divisors (4411843).

23123261 is a wasteful number, since it uses less digits than its factorization.

23123261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340.

The product of its digits is 432, while the sum is 20.

The square root of 23123261 is about 4808.6651994083. The cubic root of 23123261 is about 284.8938190688.

Adding to 23123261 its reverse (16232132), we get a palindrome (39355393).

The spelling of 23123261 in words is "twenty-three million, one hundred twenty-three thousand, two hundred sixty-one".